To become a pro speaker, you don't need a "speaker's license". You have no exams to pass, no conditions to meet, and no applications to submit. You don't need to be certified or approved by anyone. You don't need to join a union or other professional association. You don't need to get a permit. You don't need a degree.
In short, you don't need permission... from anybody!
Pro speaking is one of the last truly entrepreneurial activities, and your career is not under the control of anyone else.
You don't need to prove your qualifications to anyone except your audience! And you don't need permission from anyone to pursue your dream!